AutoCodes – Generic – B2425

B2425 Code - Driver Seat Heater Circuit

Quick Answer

The Driver and Passenger Seat Heaters are controlled by the Driver Seat Module (DSM). Common causes include Faulty Driver Seat Heater, Driver Seat Heater harness is open or shorted, Driver Seat Heater circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2425 indicates Driver Seat Heater Circuit.
Common causes: Common causes include Faulty Driver Seat Heater, Driver Seat Heater harness is open or shorted, Driver Seat Heater circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 22,861

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code B2425 Description

The Driver and Passenger Seat Heaters are controlled by the Driver Seat Module (DSM). Power is supplied to the driver seat cushion and back heater elements through individual voltage supply circuits. Power is supplied to the passenger seat cushion and back heater elements through a common voltage supply circuit. All of the driver and passenger seat heater elements are grounded by the DSM through individual low side drive control circuits. The heater element control circuits are pulse width modulated to ground by the DSM in order to control the seat temperatures by regulating the current flow through the heater elements.

OBDII Code B2425 - Driver Seat Heater Circuit - AutoCodes.com — B2425 Code - Driver Seat Heater Circuit

What does this mean?

What are the Possible Causes of the DTC B2425?

Faulty Driver Seat Heater
Driver Seat Heater harness is open or shorted
Driver Seat Heater circuit poor electrical connection
Faulty Driver Seat Module (DSM)

How to Fix the DTC B2425?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2425 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B2425 code?

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Information for Specific Makes

B2425 Buick — Driver Seat Heater Circuit
B2425 Cadillac — Driver Seat Heater Circuit
B2425 Chevrolet — Driver Seat Heater Circuit
B2425 GMC — Driver Seat Heater Circuit
B2425 Hyundai — Left Pinch Strip Open or Stuck High
B2425 KIA — Left Pinch Strip Open or Stuck High
B2425 Lexus — Headlight Leveling Motor Right Communication Malfunction
B2425 Toyota — Headlight Leveling Motor Right Communication Malfunction

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.